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FIX: Windows Explorer crashes when you minimize Windows Media Player

When you minimize Microsoft Windows Media Player to the Windows taskbar in Windows Vista, the player causes Windows Explorer to crash.
This problem occurs because of a potential reentrancy condition in which an object can be destroyed while the internal object makes a call to another component.

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, obtain the hotfix from the Microsoft Download Center.

Download information

The following files are available for download from the MicrosoftDownload Center:
Windows Vista, 32-bit versions (all languages)
DownloadDownload the Windows6.0-KB944883-v2-x86.msu package now.
Windows Vista, 64-bit versions (all languages)
DownloadDownload the Windows6.0-KB944883-v2-x64.msu package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
File nameFile versionFile sizeDateTimePlatform
Computer.pngNot Applicable4,13607-Jan-200705:38Not Applicable
Renderingcontrol.xmlNot Applicable5,42207-Jan-200705:38Not Applicable
Wmp.mofNot Applicable4,88707-Jan-200705:39Not Applicable
Wmpplayer-ppdlic.xrm-msNot Applicable2,96530-Nov-200703:41Not Applicable
Wmpplayer-ppdlic.xrm-msNot Applicable2,96530-Nov-200705:07Not Applicable
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.
To work around this issue, turn off the Windows Media Player toolbar for Windows Explorer. To do this, follow these steps:
  1. Open Control Panel, and then click Appearance and Personalization.
  2. Click Taskbar and Start Menu.
  3. On the Toolbars tab, clear the Windows Media Player check box.
After you follow these steps, the toolbar does not appear on the Windows taskbar when Windows Media Player is minimized.
watson hang explorer minimize wmp toolbar

Article ID: 944883 - Last Review: 09/27/2011 13:46:00 - Revision: 2.0

  • Windows Media Player 11
  • kbvistasp1fix kbfix KB944883
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